Online Stopwatch
A free, accurate stopwatch with lap times — no ads, no "Go Premium" nagging, no signup. Just press Start.
No laps recorded yet — click Lap while the stopwatch is running.
Why use this stopwatch
Most free online stopwatches bury the timer under ads and a constant "Go Ad Free / Join Premium" upsell. This one doesn't — it's a small piece of JavaScript that runs entirely in this browser tab, accurate to the centisecond, with clean lap tracking and a fullscreen mode for workouts, sports practice, or presentations. The browser tab's title also updates live with the elapsed time, so you can glance at any open tab and know exactly how long it's been running.
Frequently asked questions
Is this online stopwatch free, with no ads?
Yes — 100% free, no signup, and no ads or premium upsell. Just press Start.
How accurate is the stopwatch?
It measures time to the centisecond (1/100th of a second) using your browser's high-resolution timer, and stays accurate even if the tab is in the background.
Can I record lap or split times?
Yes. Click Lap while the stopwatch is running to record each split — both the lap time and the running total are shown, most recent lap on top.
Does the tab title show the elapsed time?
Yes. While running, the browser tab's title updates live with the elapsed time, so you can check it without switching back to the tab.